Suppose we idealize the shape of the fish as a prolate ellipsoid with semi-axis lengths of a and b where the length of the fish is l=2a and the width is 2b. the coefficient of friction for a prolate ellipsoid with semi-axes a and b moving length-wise through a fluid (fish do not swim side-wise) is f=2πηaln(2a/b)−0.5 calculate the coefficient of friction of the fish swimming length-wise though water

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.